Rotary engine.



, Patented Feb. 5, l90l. F. C. TUCKER. ROTARY ENGINE.

(Application filed Apr. 28, 1900.

2 Shaets$heet I.

(No Model.)

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ROTARY ENGINE.

(Application filed Apr. 28, 1900.:

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FRED O. TUCKER, OF LUBEC, MAINE.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 667,609, dated February5, 190i.

Application filed April 28,1900. Serial No. 14,754. (No model.)

To all whom it may concern/.-

Be it known that I, FRED C. TUCKER, a citizen of the United States,residing at Lubec, in the county of Washington and State of Maine, haveinvented certain new and useful Improvements in Rotary Engines, of whichthe following is a specification.

This invention relates to new and useful improvements in rotary engines,and its primary object is to provide a device of this character which issimple and durable in construction, smooth in operation, and which is soconstructed as to permit a continuous pressure of steam upon the piston.

A further object is to provide a valve of novel construction whereby thesteam will be admitted automatically to each of the pistonheadsalternately.

To these ends the invention consists in providing a piston having aflange at each end and at the center thereof, each of the walls of thecentral flange and the inner walls of the end flanges being inclined toformbearings for hinged valve-plates adapted to direct the steam againstpiston -heads arranged at suitable points between the flanges of thepiston. Mounted within the casing is a rotary valve having adiagonally-extending passage therein and having a gear secured theretoadapted to receive motion from the rotating piston.

Theinvention also consistsin the novelconstruction and combination ofparts hereinafter more fully described and claimed, and illustrated inthe accompanying drawings, showing the preferred form of myinvention,and in which Figure 1 is a front elevation of the device. Fig. 2 is acentral vertical transverse section therethrough. Fig.3is alongitudinalsection. Fig. 4 is a plan view of the piston detached. Fig.5 is a similar view of the rotary valve, and Fig. 6 is a perspectiveview of the valveplate.

Referring to said figures by numerals of reference, 1 is acasing of anysuitable form and material and having a piston 2 fitting snugly andrevoluble therein. This piston. is provided with a flange 3 at each endand aflange 4 at the center thereof,and these flanges bear upon theinner surface of the casing,as shown. Between one of the flanges 3 andthe flange 4 is a partition or head 5, and a similar partition issecured between said flange 3 ata point out of alinement with the firstpartition.

The walls of the flanges are preferably inclined, as shown, and formbearings for tapered valve plates 6, which are each provided withenlarged cylindrical ends 7, which are mounted and revolve within thecasing near the upper end thereof.

A shaft 8 projects through the side of the casing 1 from the piston 2and is provided with a gear 9, adapted to engage a similar gear 10,mounted upon a shaft'll, which extends through the casing near the upperend of the side thereof and is secured at its inner end to a cylindricalvalve 12, mounted within the casing at a point above the recesses 13,which are adapted to receive the plates 6. This valve is provided withan inclined passage 14 therethrough,which extends from one end to theother thereof.

A suitable inlet 15 is provided at the center of the top of the casing,and said top is so constructed as to form a chamber above the valve 12.

Between each of the recesses 13 and the valve 12 is a slot 16, wherebysteam admitted to said valve may pass directly into contact with one ofthe cylinder-heads. Outlets or exhaust-ports 17 are provided in the sideof the casing preferably at points adjacent to the bottoms of the plates6.

In operation steam is admitted through the inlet 15 and the passage 14of the valve 12 into contact with one of the piston-heads 5. This willcause the piston to rotate in one direction, as the escape of steam inthe opposite direction is prevented by the plate 6, which lies withinthe path of said pistonhead. This revolution of the piston will impart arotary motion to the valve 12, which will thereby direct the steamentering the inlet 15 against the remaining head 5 of the piston. As thepiston revolves the steam will exhaust through the ports 17, and it willbe understood that while the steam is exhausting from one half of thecylinder the admission of steam to said head is prevented by the valve12, which at the same time is directing steam into the other half of thepiston.

It will be readily understood that when the IOO heads 5 contact with theplates 6 said plates will be swung upward into their respective recessesuntil the heads have passed.

In the foregoing description I have shown the preferred form ofmyinvention; but I do not limit myself thereto, as I am aware thatmodifications may be made therein Without departing from the spirit orsacrificing the advantages thereof, and I therefore reserve the right tomake such changes and alterations as may fairly fall within the scope ofmy invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

The combination with a casing; of a cylinder mounted therein; taperedannular flanges thereto; heads between the flanges and out of alinementwith each other; a shaft to said cylinder extending through the casing;a gear upon the shaft; a cylinder mounted Within the casing above thepiston having an in-

